Engineer II, Threat Detection - Windows (Hybrid)

CrowdStrike Holdings, Inc.; Sunnyvale (CA); On-site; USD 100,000 - 145,000; Full time

Benefits offered by this job

Market-leading compensation

Equity awards

Wellness programs

Generous vacation and holidays

Parental and adoption leaves

Professional development opportunities

Job summary

CrowdStrike Holdings, Inc. in Sunnyvale is seeking a seasoned detection engineer to analyze intrusions, threat campaigns, and malware, translating attacker behavior into high‑fidelity endpoint detections deployed at global scale.

You will author and optimize behavioral detection rules, query telemetry, and collaborate with threat intel and incident response teams to prioritize development while maintaining high signal‑to‑noise ratios.

Qualifications

• Bachelor's degree or 4+ years in detection engineering or endpoint security
• Experience with endpoint detection platforms or EDR tooling
• Proficiency in Windows OS internals and APIs
• PowerShell and Python for automation and analysis
• Read and understand programming languages and scripting
• Familiar with MITRE ATT&CK adversary tactics and techniques

Responsibilities

• Analyze emerging threats, campaigns, intrusion data and malware telemetry to identify detectable behaviors
• Author and optimize behavioral detection rules (IOA) for Windows endpoints
• Query and analyze endpoint telemetry to validate detection hypotheses
• Monitor detection precision and tune detections to reduce false positives
• Manage detections through development, validation, staged deployment and production monitoring
• Collaborate with threat intel and IR teams to prioritize detection development

Skills

Windows OS internals

PowerShell scripting

Python for automation

Threat analysis

EDR tooling

Telemetry analysis

Education

Bachelor's degree in information security or computer science

Tools

EDR platforms

Sandboxing

Regex tooling

Telemetry collection tooling

Job description

About the Role

The CrowdStrike Endpoint Protection (EPP) Content Response team is seeking an experienced and passionate professional to analyze intrusions, threat campaigns, and malware — and to drive efforts to mitigate them by implementing robust behavioral detection coverage on the Falcon sensor platform. The content response team improves detection capability and efficiency through tactical analysis of ongoing attacks by criminal and nation‑state actors impacting our customers, translating observed attacker behavior into high‑fidelity endpoint detections deployed at global scale.

What You’ll Do

• Analyze emerging threats, campaigns, intrusion data, and malware execution telemetry to identify detectable behaviors and coverage gaps
• Author and optimize behavioral detection rules (Indicators of Attack) targeting adversary techniques observed on Windows endpoints
• Query and analyze endpoint telemetry (process execution, file system, registry, memory, authentication events) to validate detection hypotheses and assess coverage
• Monitor detection precision metrics, investigate false positives, and tune detections to maintain high signal‑to‑noise ratios
• Manage detections through a structured lifecycle: development, validation, staged deployment, and production monitoring
• Collaborate with threat intelligence and incident response teams to prioritize detection development based on active threat campaigns

What You’ll Need

• Must be eligible for CJIS clearance (requires U.S. citizenship or Green Card/permanent resident status).
• Bachelor's degree in information security, computer science, or related field — or 4+ years of equivalent hands‑on experience in detection engineering, threat analysis, or endpoint security.
• Experience with endpoint detection platforms, EDR tooling, or detection‑driven security workflows.
• Proficiency in Windows OS internals and APIs (process creation, registry, file system, memory management, authentication subsystems).
• Experience with behavioral malware analysis, sandboxing, telemetry collection, and detectable behaviors from execution logs or Windows forensics.
• Working knowledge of regular expressions and pattern‑based detection authoring.
• Ability to read and understand various programming languages and PowerShell; scripting proficiency in Python for automation and analysis.
• Experience analyzing endpoint telemetry or host‑based log data to identify malicious patterns.
• Solid working knowledge of common adversary TTPs and the ability to translate threat intelligence into detection logic.
• Ability to assess cyber threat intelligence, open‑source intelligence, or partner reporting for actionable detection opportunities.
• Passion for detection engineering, threat analysis, or security research, with the motivation to keep learning and growing.
• Comfortable using AI‑assisted tooling as a daily force multiplier, not just a novelty.
• Energetic self‑starter mentality with the ability to take ownership and be accountable for deliverables.
• Clear written and verbal communication skills to drive triage, convey detection rationale, and align cross‑functionally with both technical and executive‑level stakeholders.
• Proven experience utilizing AI technologies to enhance decision‑making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points

• Experience writing behavioral detection rules or signatures for an endpoint security product (IOA/IOC logic, behavioral engines, or equivalent)
• Experience with regex optimization or pattern matching in performance‑sensitive contexts
• Familiarity with detection precision concepts: true/false positive analysis, disposition workflows, and tuning at scale
• Experience with detection content lifecycle management (development – testing – staged deployment – monitoring)
• Understanding of behavioral detection paradigms: process tree analysis, parent‑child relationships, API call sequences, and living‑off‑the‑land technique identification
• Familiarity with MITRE ATT&CK adversary tactics and techniques
• Experience in a security operations center or similar environment tracking threat actors and responding to incidents
• Experience building test environments, lab infrastructure, or automation to improve detection development workflows
• Working knowledge of agentic AI CLIs and skills for detection engineering workflows
• Contributions to the open‑source community (GitHub, Stack Overflow, blogging) or published research (conferences, blogs, articles)

Benefits

• Market leader in compensation and equity awards
• Comprehensive physical and mental wellness programs
• Competitive vacation and holidays for recharge
• Paid parental and adoption leaves
• Professional development opportunities for all employees regardless of level or role
• Employee Networks, geographic neighborhood groups, and volunteer opportunities to build connections
• Vibrant office culture with world‑class amenities
• Great Place to Work Certified™ across the globe

Base salary range for this position for all U.S. candidates is $100,000 - $145,000 per year, with eligibility for bonuses, equity grants and a comprehensive benefits package that includes health insurance, 401(k) and paid time off.

Equal Opportunity Employer

CrowdStrike is proud to be an equal opportunity employer. We are committed to fostering a culture of belonging where everyone is valued for who they are and empowered to succeed. We support veterans and individuals with disabilities through our affirmative action program. CrowdStrike is committed to providing equal employment opportunity for all employees and applicants for employment. The Company does not discriminate in employment opportunities or practices on the basis of race, color, creed, ethnicity, religion, sex (including pregnancy or pregnancy‑related medical conditions), sexual orientation, gender identity, marital or family status, veteran status, age, national origin, ancestry, physical disability (including HIV and AIDS), mental disability, medical condition, genetic information, membership or activity in a local human rights commission, status with regard to public assistance, or any other characteristic protected by law. We base all employment decisions—including recruitment, selection, training, compensation, benefits, discipline, promotions, transfers, lay‑offs, return from lay‑off, terminations and social/recreational programs—on valid job requirements.